这辆赛车以极快的速度行驶。

The ___race car is moving at a high speed.

他参加了自行车比赛并获得了第一名。

He joined the bicycle ___race and won first place.

各国正在竞相研发新冠病毒疫苗。

Countries are in a ___race to develop a COVID-19 vaccine.

不同种族的人应该互相尊重和理解。

People of different ___races should respect and understand each other.